Lead structure for reducing low voltage DC resistance unbalance rate of oil-immersed station transformer
By optimizing the lead structure of the low-voltage DC resistance imbalance rate of the oil-immersed substation transformer and using a combination of copper busbars and connecting plates, the problems of increased copper usage and high cost in the traditional solution were solved, achieving the effect of low resistance imbalance rate and material saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN POWER GENERATION EQUIP PLANT
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional lead wire structures, when used to reduce the resistance imbalance rate of low-voltage DC transformers in oil-immersed substations, suffer from problems such as increased copper consumption, high cost, and inability to meet the resistance imbalance rate requirements.
A new lead structure design is adopted, which separates the copper busbar at the tail of phase B from the copper busbars of phases A and C. The lead resistance distribution is optimized by combining the copper busbar and the connecting piece, reducing the amount of copper busbar used. At the same time, the copper busbar is reinforced with clamping wooden parts.
It achieves a reduction in DC resistance imbalance rate, reduces the amount of copper busbars used, lowers costs, meets resistance imbalance rate requirements, and offers superior lead clamping and electrical distance control compared to traditional solutions.
Smart Images
Figure CN224304505U_ABST